I had something similar happen with some low profile 17s. Hit a pot hole from roadwork that wasn't marked. It dented my rim in about 2-3" and blew out the tire instantly.
I also had one happen that luckily didn't damage the rim because I had slightly bigger tires on, but other than that same story. It took a fist sized gash out of the tire and had me changing a tire on the freeway.
Sucks when that stuff happens, but it looks like his is still holding air somehow. The vibration must be horrible.

Same go's for the Lowerd and Jacked up truck guy's. We have all seen some pretty Stupid ride's
I bet you the guys driving them have the same thing going threw their head as the guys that ride JET SKI's You and are are looking at them saying " That f-ing stupid" all while they are looking back at you thinking " check out this dude checking out my sick ride" LOL

I know this ish is all subjective but I don't think it has to do with the size of the wheel I think it has to do with the stance of your ride relative the gap in the wheel well. People put on these huge wheels and then have clearance problems so they can't close the gap. IMO they need to be stuffed like Nick's ride. Don't go big wheels, low pro's and have a gap - it looks halfway done to me. It is easy to buy wheels and tires - it is a lot of work to dump it and get the stance/clearance right.

My last IS had 18's without a drop and honestly looked pretty stupid.... but that one was the AWD and I read a lot of people getting bad vibrations from dropping the AWD.

The one above is dropped 1.7" and the 19's fit perfectly without a rub.... its amazing what a little drop will do, especially when I park next to a "stock" IS350... but this obviously isn't a tow vehicle, so a drop is a little easier to justify. I'm suprised that even on 30 series tires the ride is fantastic with these newer springs.